Clock-alarm



(No Model.) V J. H. MGGLYNN &-W.. P. HOWELLS.

CLOCK ALARM.

Elm-375,497. Patented 1360.27, 1887.

WITNESSES ATTORNEYS.

' UNITED STATES PATENT. OF ICE.

JAMES H. MOGLYNN AN WILLIAM F. HowELLs, OF wILKEs-BARRE PENNSYLVANIA.

CLOCK-ALARM.

SPECIFICATION forming part ofLetters Patent No. 375,497, dated December27, 1887;

Application filed May 16, 1887. Serial No. 238,397. (No model.)

To all whom, it may concern:

Be it known that we, J Aims H. McGLYNN and WILLIAM P. HownLLs, ofWilkes-Barre, in the county of Luzerne and State of Pennsylvania, haveinvented a .new and useful Imment to clocks of different'kinds forcalling or waking a person at any time required, rang- Ing, say, fromfive minutes to twelve hours from the time the alarm is set,withoutdisturbing others by the noise of the alarm, and without interferingwith the clock-movement or retarding its speed, and whereby the greatestfacility is afforded for setting the alarm, substantially as hereinafterdescribed, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthisspecification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 represents a view in elevation of an alarm attachment asapplied to the back of a clock or time-piece and as embodying ourinvention; and Fig. 2 is a partlysectional plan view of the same, thesection being taken upon the line :0 a: in Fig. 1.

A is a clock or stationary time-piece of any suitable kind, and b apinion on the hour-spindle of the same, which pinion may be on theexterior of the back of the clock, as here shown, or elsewhere.

B is a spur-gear of, say, twelve times the size of the pinion, intowhich said pinion meshes. This wheel is divided on its face into twelveequal parts, representing the several hours of the day or night, andthese parts subdivided into other equal parts representing minutes. Uponthe face of said wheel B is a stud or pin, 0, which, as it comes roundin a given or set space of ti me,strikes an approximately upright lever,O, and liberates an approximately horizontal lever, D, on which itvcatches or with which it engages. This lever D has connected with it, asby a cord or chain, E, arranged to pass over an ele-vated'pulley, F, aweight, G, of any required size or capacity, and as the lever D isliberated from the lever 0 said weight descends to give the alarm ordesired arousing effect-as, for instance, by pulling through the cord orchain E on the person of the party using the alarm, or in any otherdesired manner. To this end the cord or chain E is suitably extendedbeyond the lever D, and said cord or chain made to engage with the leverD by a ring or loop, 6, that on the disengagement of the lever D fromthe catch or tripping lever O slips off or from the lever D in order toallow the weight G to descend. Said ring also serves another purpose orfunc tionthat is to say, on being liberated from the lever D it acts asa stop to prevent the Weight G from striking the floor by said ringcoming in contact with the hanger I of the pulley F or other obstructionbefore the weight can reach the floor, thus doing away with anydisturbing noise to others in thehouse.

To set or change the alarm, the wheel B is turned so as to bring thestud c at a greater or less distance in the forward travel of said wheelfrom its contact-point with the lever 0, according to the time the alarmis required to act. To do this it will be necessary to provide forturning the wheel B both back and forth without disturbing theclock-movement. This we accomplish as follows: The wheel B is hung so asnot only to be free to turn upon a fixed stud, f, but also to be slidlongitudinally thereon when required, so as to put it out of gear, asshown by dotted lines in Fig. 2, with the pinion b,when turning saidwheel to adjust or set the alarm. This wheel B is provided with anenlarged sleeve, 9, which notonly receives the stud f within it, butalsoa spiral spring, 71, that bears at its outer end againsta stop onthe outer end of the stud f and at its inner end against the wheel. Thisspring opcrates to force the wheel B into and to hold it in gear withthe pinion b, excepting when said wheel is purposely drawn out from geartherewith, as described.

The alarm attachment runs free and easy, so that it has little or noperceptible effect upon the time movementsof the clock.

Having thus fully described our invention, we claim as new and desire tosecure by Letters Patent- ICO 1. In an alarm attachment for clocks, thecombination, with the pinion of the clock- 1novement, of the spur-wheelhaving time-divisions upon it and provided with an alarmoperating studor pin, the tripping-lever, an additional lever engaging with saidtrippinglever, and the pulley and the cord or flexible connection, toone end of which is attached a weight, and which is adapted forattachment to the person to be reused, and provided with a ring or loopengaging said additional lever and having contact with said pulley,substantially as set forth.

2. In an alarm attachment for clocks, the combination,with the pinion bof the clock, of 15 the stud f, the spring h, and the operatingadjustable wheel B of the alarin attachment having a sleeve, 5 andadapted to rotate upon said stud with freedom to slide thereon subjectto control by the spring, substantially as and 20 for the purposesherein set forth.

JAMES H. MOGLYNN. \VILLIAM P. HOWELLS.

Witnesses: 7

W. S. Pnnsons, Tnno. Itl-unnnip'n.

